Mie, Axel; Laursen, Kristian Holst; Aberg, K Magnus; Forshed, Jenny; Lindahl, Anna; Thorup-Kristensen, Kristian; Olsson, Marie; Knuthsen, Pia; Larsen, Erik Huusfeldt and Husted, Søren (2014) Discrimination of conventional and organic white cabbage from a long-term field trial study using untargeted LC-MS-based metabolomics. Analytical and bioanalytical chemistry, 406, pp. 1-13. [In Press]
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The influence of organic and conventional farming practices on the content of single nutrients in plants is disputed in the scientific literature. Here, large-scale untargeted LC-MS-based metabolomics was used to compare the composition of white cabbage from organic and conventional agriculture, measuring 1,600 compounds. Cabbage was sampled in 2 years from one conventional and two organic farming systems in a rigidly controlled long-term field trial in Denmark. Using Orthogonal Projection to Latent Structures-Discriminant Analysis (OPLS-DA), we found that the production system leaves a significant (p = 0.013) imprint in the white cabbage metabolome that is retained between production years. We externally validated this finding by predicting the production system of samples from one year using a classification model built on samples from the other year, with a correct classification in 83 % of cases. Thus, it was concluded that the investigated conventional and organic management practices have a systematic impact on the metabolome of white cabbage. This emphasizes the potential of untargeted metabolomics for authenticity testing of organic plant products.
| EPrint Type: | Journal paper |
|---|---|
| Subjects: | Farming Systems Food systems > Food security, food quality and human health Crop husbandry Crop husbandry > Crop health, quality, protection Farming Systems > Farm nutrient management |
| Research affiliation: | Denmark > AU - Aarhus University Denmark > DTU - Technical University of Denmark Denmark > KU - University of Copenhagen Sweden > Swedish University of Agricultural Sciences (SLU) Sweden > University of Stockholm Sweden > Other organizations Sweden |
| ISSN: | 1618-2650 |
| Related Links: | http://dx.doi.org/10.1007/s00216-014-7704-0 |
| Deposited By: | Mie, Axel |
| ID Code: | 25578 |
| Deposited On: | 31 Mar 2014 13:45 |
| Last Modified: | 31 Mar 2014 13:45 |
| Document Language: | English |
| Status: | In Press |
| Refereed: | Peer-reviewed and accepted |
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